According to this: http://www.stowiki.org/Breen_Transph...luster_Torpedo
Both, and then some...

I use the clustertorpedo myself, and i can only praise the rule62 console sky high.

Contraire to others, i have it rearside. When I attack, i pass straight by, launching the cluster torpedo. It will then soften up my target just in time for the next pass. (Flying steamrunner).